By 1969 or earlier, Japan had introduced peacocks to its southern islands as pets and zoo attractions, and escaped birds later preyed on native lizards and butterflies

Originally brought to Japan as decorative birds, Indian peafowls have turned into an invasive challenge on the southern islands. Freeing themselves from captivity, these peafowls thrived due to an absence of natural predators. Their feeding behavior adversely affects local reptiles and butterflies, raising pressing ecological issues. In response, regional authorities have started implementing control measures and eradication efforts, making it a serious environmental concern governed by specific protection ordinances.
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